CN2922320Y - Fax data exchanging device - Google Patents

Abstract

The utility model discloses a fax data exchanging device comprising an incoming end interface circuit, a delivery end interface circuit, a modulation demodulation module, a FAX access module, a power module and a switch module, wherein, the switch module comprises a control circuit, a signal coupling circuit, a first relay circuit, a second relay circuit and a third relay circuit; the first relay circuit, the second relay circuit and the third relay circuit are configured as a first proposal or a second proposal according to demoded key entry.

Description

A kind of fax data exchange unit

Technical field

The utility model belongs to a kind of fax data exchange unit.

Background technology

At present, increasing enterprises and institutions, from original facsimile machine fax sending and receiving, being transformed into uses a computer receives and dispatches, manages fax, makes facsimile messageization.In this industry alternation procedure, never good solution is handled in the transmission of the non-electronic document of part that must also can exist for company, scheme (being prior art) commonly used now is to insert intra-company's telephone network simultaneously by facsimile machine and facsimile equipment, facsimile machine is dialled the inside line number that facsimile equipment inserts non-electronic document is sent out into fasystem then, forwards by fasystem behind the formation electronic document again.

But in this process, two conditions that need satisfy simultaneously just can be finished: one, company must possess the internal electrical phone network, and this is relatively more difficult for a large amount of medium-sized and small enterprises; Two, must waste a facsimile equipment and receive non-electronic document, cause expense to increase.In addition, also need to dial the different extension of facsimile equipment when need sending non-electronic document, process is loaded down with trivial details.

The utility model content

The utility model technical issues that need to address, i.e. the purpose of this utility model is for an equipment being provided, promptly can receiving and dispatching outside fax, again can compatible facsimile machine finishes the data transaction of non-electronic document.

To achieve these goals, fax data exchange unit of the present utility model comprises:

An incoming end interface circuit provides an interface with outside facsimile machine;

An output interface circuit; Interface with the PSTN network is provided;

A modulation module is connected in a PSTN network by described output interface circuit, can be by this PSTN network transceive data fax;

A facsimile machine access module is used to receive the signal of being introduced by the incoming end interface circuit through dtmf code, and its decoding is produced one first status signal and one second status signal;

A Switching Module comprises a control circuit, a signal coupling circuit, one first relay circuit, one second relay circuit; One the 3rd relay circuit;

Described control circuit comprises a microprocessor, described microprocessor is carried out a program, described program comprises and at first first relay circuit, second relay circuit and the 3rd relay circuit is configured to make described output interface circuit to be communicated with described modulation module, whether control described facsimile machine interface circuit scanning incoming end interface circuit simultaneously has the button input of facsimile machine, as receive button input, then enter an identification step, as do not receive, then continue scanning; In identification step, the described button input that receives is decoded, and judge through decoded button input corresponding predefined first allocation plan, second allocation plan or not corresponding allocation plan; As corresponding first allocation plan, then driving first relay circuit, second relay circuit and the 3rd relay circuit makes described input end interface circuit be connected with described output interface circuit, as corresponding second allocation plan, then drive second relay circuit, the 3rd relay circuit makes described input end interface circuit be communicated with described modulation module; As not corresponding scheme, then keep current configuration;

A power module is used for comprising a switch for described facsimile machine access module, Switching Module and modulation module provide power supply, the open and-shut mode of this switch control power module.

Fax data exchange unit of the present utility model connects outside facsimile machine by described incoming end interface circuit, connect the PSTN phone network by described output interface circuit, described power module is converted to the needed power supply of each circuit part in order to the external power source that will insert, and the work of switch control power module is arranged; When described switch cut out, power module was not worked; Fax data exchange unit is in not under the power-up state, and first relay circuit, second relay circuit and the 3rd relay circuit are configured to make by the output interface circuit and connect PSTN phone network and the two-way UNICOM of outside facsimile machine that is connected by the incoming end interface circuit;

After the switch opens of power module, fax data exchange unit gets electric, carries out a control program, and this program may further comprise the steps; Be configured to make the modulation module to be connected first relay circuit, second relay circuit and the 3rd relay circuit with the PSTN network, control facsimile machine place in circuit access side interface circuit simultaneously and carry out intermittent scanning, check the push button signalling whether outside facsimile machine is arranged, if any, then carry out a determining step, as there is not then maintenance scanning; As detect the facsimile machine input signal, then this push button signalling is decoded by the facsimile machine access module, and according in advance setting, judge corresponding one first allocation plan of this push button signalling, second allocation plan or not corresponding scheme, first allocation plan in this way, then drive first relay circuit, second relay circuit and the 3rd relay circuit, the incoming end interface circuit is connected, with described output interface circuit even outside facsimile machine links to each other with the PSTN network; Second allocation plan then drives second relay circuit in this way, and the 3rd relay circuit makes the incoming end interface circuit be communicated with the modulation module; As not corresponding scheme, then keep current state.

The file that transmits by control program and the integrated circuit machine of receiving faxes, need not the enterprises telephone network, the direct connection device of facsimile machine, and operation is very simple, only need on facsimile machine, can insert fasystem, change non-electronic document, or can directly be linked into outside line by another button by a button, directly and external call, very simple and convenient.Equipment provides the solution of the non-electronic document of an integral body like this, supports for the popularization of information-based fasystem provides forcefully.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is the circuit diagram in first kind of embodiment of the utility model.

Fig. 3 is the performed program flow diagram of microcontroller of the present utility model.

Embodiment

Fax data exchange unit of the present utility model comprises:

1, one output interface circuit 2 of an incoming end interface circuit; 4, one Switching Modules 5 of 3, one facsimile machine access module of a modulation module, wherein, Switching Module 5 comprises 53, one second relay circuits 54 of 52, one first relay circuits of 51, one signal coupling circuits of a control circuit; One the 3rd relay circuit 55.

Fig. 1 is the circuit diagram in first kind of embodiment of the utility model, with reference to Fig. 1, facsimile machine input module 4 is the decoding circuit based on DTMF decoding chip U1, and it is according to the dtmf code signal of input input, from the signal of output D1-D4 output through decoding.

Control circuit 51 in the Switching Module 5 is based on microcontroller U2, itself and the shared crystal oscillator of DTMF decoding chip U1 are as external clock, wherein one of microcontroller U2 group of input P1.0-P1.3 connects the output D1-D4 of DTMF decoding chip U1, to obtain dtmf signal through decoding, output P1.4, P1.5 are coupled in incoming end interface circuit 1, an output interface circuit 2 and a modulation module 3 respectively to export first busy-back signal, second busy-back signal and the 3rd busy-back signal;

Comprise a memory cell in the microcontroller U2, this memory cell is preserved a control program, its flow chart as shown in Figure 3, microcontroller is carried out the described program execution command of peace.According to Fig. 3, described control program comprises a configuration and scanning step 801, in this step, by sending control signal to first relay circuit 53, second relay circuit 54 and the 3rd relay circuit 55, drive the action of relay coil, make the output interface circuit 2 that connects the PSTN network be communicated with modulation module 3; Whether the input P1.0 to P1.4 that scans simultaneously in facsimile machine access module 4 has the button input of outside facsimile machine, as no button input, then continues scanning and its current state of retentive control; Import if any button, then enter an identification step 802, in this step 802, button input the carrying out DTMF decoding that 4 pairs of facsimile machine access module receive, and microcontroller U2 is sent in the back button input of will decoding, the DTMF decoded signal of microcontroller U2 identification input is that the control model according to different of first state or second state and correspondence enters actuation step 803, as judgement is first state, one first drive scheme of Dui Ying generation then, promptly drive first relay circuit, second relay circuit and the 3rd relay circuit are connected with the PSTN network that is connected in output interface circuit 2 even be connected into the outside facsimile machine of incoming end interface circuit 1 so that incoming end interface circuit 1 is communicated with output interface circuit 2; As judgement is second state, one second drive scheme of Dui Ying generation then, promptly second relay circuit and the 3rd relay circuit are communicated with modulation module 3 even be connected into the outside facsimile machine of incoming end interface circuit 1 so that incoming end interface circuit 1 is communicated with modulation module 3; The not corresponding any drive scheme of button input as through decoding then keeps existing configuration status constant, and continues scanning.

When microcontroller U2 detects when the PSTN network is communicated with modulation module 3, there is transfer of data in both, then can promptly send a busy-back signal to outside facsimile machine by output P1.4 to incoming end control circuit 1, to indicate outside facsimile machine, communication line just in use; When Switching Module 5 was in first allocation plan or second allocation plan, identical busy-back signal also can pass through output P1.5, and P1.6 is sent to modulation module 3 and output interface circuit 2 respectively.

First relay circuit 53 comprises relay R ELAY1, and relay R ELAY1 comprises a coil K1, and a switch S 1, switch S 1 be by the gain and loss electric control of coil K1, with output interface circuit 2 in a signal coupling circuit 52 and 51 switchings of control circuit; The dead electricity that gets of coil K1 is controlled by a triode Q1, and the base stage of Q1 connects one first control signal output ends of control circuit 51; When output interface circuit 2 linked to each other with signal coupling circuit 52, it can or be connected to incoming end interface circuit 1 by signal coupling circuit 52, or is connected to modulation module 3; When output interface circuit 2 links to each other bell signal input control circuit 53 by a photoelectricity coupling, control circuit 53 control corresponding first relay circuit, second relay circuit and the 3rd relay circuit make incoming end interface circuit 1 or modulation module 3 be connected with output interface circuit 2.

Second relay circuit 54 comprises relay R ELAY2, relay R ELAY2 comprises a coil K2, a switches set S2, wherein, switches set S2 is controlled by coil K2, can switch to incoming end interface circuit 1 is connected with modulation module 3, or incoming end interface circuit 1 is connected with the 3rd relay circuit; Coil K2 is controlled by a triode Q2, and triode Q2 base stage connects one second control signal output ends of control circuit 51, to receive second control signal;

The 3rd relay circuit 55 comprises relay R ELAY3, relay R ELAY3 comprises a coil K3, a switches set S3, wherein, switches set S3 is controlled by coil K3, can switch to receiving terminal interface circuit 1 is connected with signal coupling circuit 52, or modulation module 3 is connected to signal coupling circuit 52; Coil K3 gets dead electricity by triode Q3 control, and the base stage of Q3 connects one the 3rd control signal output ends of control circuit 51, thereby receives the 3rd control signal.

Being the utility model preferred embodiment only in sum, is not to be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.

Claims (1)

1. fax data exchange unit is characterized in that: comprising:

An incoming end interface circuit provides an interface with outside facsimile machine;

An output interface circuit; Interface with the PSTN network is provided;

A modulation module is connected in a PSTN network by described output interface circuit, can be by this PSTN network transceive data fax;

A facsimile machine access module is used to receive the signal of being introduced by the incoming end interface circuit through dtmf code, and its decoding is produced one first status signal and one second status signal;

A Switching Module comprises a control circuit, a signal coupling circuit, one first relay circuit, one second relay circuit; One the 3rd relay circuit;

Described control circuit comprises a microprocessor, described microprocessor is carried out a program, described program comprises and at first first relay circuit, second relay circuit and the 3rd relay circuit is configured to make described output interface circuit to be communicated with described modulation module, whether control described facsimile machine interface circuit scanning incoming end interface circuit simultaneously has the button input of facsimile machine, as receive button input, then enter an identification step, as do not receive, then continue scanning; In identification step, the described button input that receives is decoded, and judge through decoded button input corresponding predefined first allocation plan, second allocation plan or not corresponding allocation plan; As corresponding first allocation plan, then driving first relay circuit, second relay circuit and the 3rd relay circuit makes described input end interface circuit be connected with described output interface circuit, as corresponding second allocation plan, then drive second relay circuit, the 3rd relay circuit makes described input end interface circuit be communicated with described modulation module; As not corresponding scheme, then keep current configuration;

A power module is used for comprising a switch for described facsimile machine access module, Switching Module and modulation module provide power supply, the open and-shut mode of this switch control power module.

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